OS 14 sets standard drawing sizes, which includes all the European 'A' series paper sizes and the American ANSI sizes ('A' to 'E').
For non-standard drawing sizes, use Option Switch 15: Drawing Size (Height) and Option Switch 16: Drawing Size (Width).
Switch positions 3 and 4 permit direct PostScript files to be plotted at a reduced scale, as shown in the following illustration:
You can also achieve this effect by plotting out of a 2D graphics system, such as
AutoCAD or MicroStation.